利用.NET框架提供的 WebClient类 和 WebRequest类,我们可以很轻易地得到给定URL地址的源代码,很简单,以下是C#的完整的例子. 查看例子 GetPageHtml.aspx 得到网页源代码 得到任意网页源代码 http://dotnet.aspx.cc/content.aspx GetPageHtml.aspx.csusing System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.IO; using System.Net; using System.Text; using System.Text.RegularExpressions; namespace eMeng.Exam { /// /// GetPageHtml 的摘要说明。 /// public class GetPageHtml : System.Web.UI.Page { protected System.Web.UI.WebControls.Button WebClientButton; protected System.Web.UI.WebControls.Button WebRequestButton; protected System.Web.UI.WebControls.TextBox ContentHtml; protected System.Web.UI.WebControls.TextBox UrlText; protected System.Web.UI.WebControls.Button GetText; private string PageUrl = ""; private void Page_Load(object sender, System.EventArgs e) {} #region Web Form Designer generated code override protected void OnInit(EventArgs e) { InitializeComponent(); base.OnInit(e); } /// /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// private void InitializeComponent() { this.WebClientButton.Click += new System.EventHandler(this.WebClientButton_Click); this.WebRequestButton.Click += new System.EventHandler(this.WebRequestButton_Click); this.GetText.Click += new System.EventHandler(this.GetText_Click); this.Load += new System.EventHandler(this.Page_Load); } #endregion private void WebClientButton_Click(object sender, System.EventArgs e) { PageUrl = UrlText.Text; WebClient wc = new WebClient(); wc.Credentials = CredentialCache.DefaultCredentials; ///方法一： Byte[] pageData = wc.DownloadData(PageUrl); ContentHtml.Text = Encoding.Default.GetString(pageData); /// 方法二： /// ***************代码开始********** /// Stream resStream = wc.OpenRead(PageUrl); /// StreamReader sr = new StreamReader(resStream,System.Text.Encoding.Default); /// ContentHtml.Text = sr.ReadToEnd(); /// resStream.Close(); /// **************代码结束******** /// wc.Dispose(); } private void WebRequestButton_Click(object sender, System.EventArgs e) { PageUrl = UrlText.Text; WebRequest request = WebRequest.Create(PageUrl); WebResponse response = request.GetResponse(); Stream resStream = response.GetResponseStream(); StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default); ContentHtml.Text = sr.ReadToEnd(); resStream.Close(); sr.Close(); } private void GetText_Click(object sender, System.EventArgs e) { PageUrl = UrlText.Text; WebRequest request = WebRequest.Create(PageUrl); WebResponse response = request.GetResponse(); Stream resStream = response.GetResponseStream(); StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default); ContentHtml.Text = sr.ReadToEnd(); resStream.Close(); sr.Close(); ContentHtml.Text = Regex.Replace(ContentHtml.Text,"]*>", ""); //替换空格 ContentHtml.Text = Regex.Replace(ContentHtml.Text,"\\s+", " "); } } }

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